Sometimes, I find myself looking at a question, only to find out that the question has actually been deleted since the page loaded.
So, I was thinking, wouldn't it be cool if the page would spectacularly catch on fire once it was deleted (without refreshing). Then I would definitely know that the post was deleted, and wouldn't try to take an action on the post thinking it still existed. This would be a universal feature across all sites, with fire possibly changing based on the theme of each site. Here's some mockups:
Of course, it would have to be animated.
If anyone has their own fire mockups for this feature, I would encourage that they be added to this question. (Or link in a comment)